/Engine/Plugins/Experimental/ScriptableToolsFramework/Source/ScriptableToolsFramework/Public/ScriptableInteractiveTool.h
CanAccept function. Implement this function for AcceptCancel Tools, and return true when it is valid for the Tool Accept button to be active. Defaults to always true.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintNativeEvent, Category="ScriptableTool|Events") bool OnScriptCanAccept() const